What polynomial should be added to 4x²+5x-8 in order to equal 0?

1 answer:

8 0

4x^2 + 5x - 8 + (- 4x^2 - 5x + 8) = 0

all ur doing is changing the signs so they will cancel each other out.

so ur adding : -4x^2 - 5x + 8

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